While two of my three SmartSolar 100/30s (A & B) stay in Bulk all day (at this time of year), the third (C) goes into Absorption just before noon and then into Float roughly 2.5 hours later. Consequently my batteries never get beyond 88% charged. (If I disable the inputs to A and B, C remains in Bulk all day.)
SmartSolars A and B are each connected to 2 * 135w panels in series; C is connected to 2 * 170w panels also in series. The battery bank is 4 * Lifeline 125Ah AGMs in parallel.
All three SmartSolars have the latest firmware (v1.61) and the same custom profile:
Absorption voltage: 14.3 (per Lifeline’s recommendation)
Float voltage: 13.3 (per Lifeline’s recommendation)
Adaptive absorption time: ON
Maximum absorption time: 6hrs
Re-bulk voltrage offset: -0.4v
Tail current: 0.1A
Expert mode: OFF
- Can anyone explain why C is going to Absorption while A and B remain in Bulk and what can I do to stop C going to Float until the batteries are fully charged?
- Would setting up the SmartSolars in a VE.Smart Network so that their charging is synchronised help? If so, can I do this without a Smart Battery Sense or BMV in the network?